16420551433554 has 16 divisors (see below), whose sum is σ = 33900493282560. Its totient is φ = 5296952075280.

The previous prime is 16420551433487. The next prime is 16420551433651. The reversal of 16420551433554 is 45533415502461.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44141267109 + ... + 44141267480.

It is an arithmetic number, because the mean of its divisors is an integer number (2118780830160).

Almost surely, 2^{16420551433554} is an apocalyptic number.

16420551433554 is an abundant number, since it is smaller than the sum of its proper divisors (17479941849006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16420551433554 is a wasteful number, since it uses less digits than its factorization.

16420551433554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88282534625.

The product of its (nonzero) digits is 4320000, while the sum is 48.

The spelling of 16420551433554 in words is "sixteen trillion, four hundred twenty billion, five hundred fifty-one million, four hundred thirty-three thousand, five hundred fifty-four".